1991 MITSUBISHI 3000GT Service Manual

GENERAL - Vehicle Identification
The illustration
indicates
right hand side,
outer.Left hand side is symmetrically opposite.31FOO7131FOO72
The illustration indicates left hand side, outer.
Right hand side is symmetrically opposite.
31FOO73
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00-14
GENERAL - Vehicle Identification
Part
Liftgate
Front
bummer
3ear bumper
Target area: for original equipment partsvmd : for replacement parts
31FOO74OOFO013
OOFO047
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GENERAL - Precautions before Service0045
c
mm (in.)so005
PRECAUTIONS BEFORE SERWCEMOOOAAOSERVICING ELECTRICAL SYSTEM
1. Note the following before proceeding with work on the
electrical system.
Note that the following must never be done:
Unauthorized modifications of any electrical device or
wiring, because such modifications might lead to a vehicle
malfunction, over-capacity or short-circuit that could result
in a fire in the vehicle.
2. When servicing the electrical system, disconnect the
negative cable terminal from the battery.
Caution1. Before connecting or disconnecting the negative
cable, be sure to turn off the ignition switch and the
lighting switch.(If this is not done, there is the possibility of
semiconductor parts being damaged.)
2. After completion of the work steps [when the
battery’s negative (-) terminal is connected], warm
up the engine and allow it to idle for approximately
five minutes under the conditions described below,in order to stabilize the engine control conditions,
and then check to be sure that the idling is
satisfactory.
Engine coolant temperature: 80 - 95°C (176 - 203°F)
Lights, electric fans, accessories: OFF
Transaxle: neutral position(A/T models: “N” or “P”)
Steering wheel: neutral (center) position
VEHICLE WASHING
If high-pressure car-washing equipment or steam car-washing
equipment is used to wash the vehicle, be sure to maintain the
spray nozzle at a distance of at least 300 mm (12 in.) from any
plastic parts and all opening parts (doors, luggage compart-
ment, etc.).
c
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00-16GENERAL - Towina and Hoistina
Sling type
Wheel lift type
Flat bed type
Sling type
Wheel lift type
Flat bed typeTOWING AND HOISTING
MOOGAACWRECKER TOWING RECOMMENDATION

FRONT TOWING PICKUP
Caution
\‘i
d
This vehicle cannot be towed by a wrecker using sling-typeequipment to prevent the bumper from deformation.
If this vehicle is towed, use wheel lift or flat bed equip-
ment.The vehicle may be towed on its rear wheels for extended
distances provided the parking brake is released. It is recom-
mended that vehicles be towed using the front pickup
whenever possible.
REAR TOWING PICKUP
Caution
This vehicle cannot be towed by a wrecker using sling-typeequipment to prevent the bumper from deformation.
If this vehicle is towed, use wheel lift or flat bed equip-
\
ment.‘L*3Manual transaxle vehicles may be towed on the front wheels,
provided the transaxle is in neutral and the drive-line has not
been damaged. The steering wheel must be clamped in the
straight-ahead position with a steering wheel clamping device
designed for towing service use.
CautionDo not use steering column lock to secure front wheel
position for towing.
Automatic transaxle vehicle may be towed on the front wheels
at speeds not to exceed 50 km/h (30 mph) for a distances not to
exceed 30 km (18 miles).
CautionIf these limits cannot be met, the front wheels must be
placed on a tow dolly.
TOWING WHEN KEYS ARE NOT AVAILABLE
When a locked vehicle must be towed and keys are not
available, the vehicle may be lifted and towed from the front,
provided the parking brake is released. If not released, the rear
wheels should be placed on a tow dolly.
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GENERAL - Towing and Hoisting
Sling type
Nheel lift type
3at bed type
SAFETY PRECAUTIONSThe following precautions should be taken when towing the
vehicle.
1.DO NOT LIFT OR TOW THE VEHICLE BY ATTACHING TO
OR WRAPPING AROUND THE BUMPER.
2. Any loose or protruding parts of damaged vehicle such as
hoods, doors, fenders, trim, etc., should be secured prior to
moving the vehicle.
3.Operator should refrain from going under a vehicle while it
is lifted by the towing equipment, unless the vehicle is
adequately supported by safety stands.
4. Never allow passengers to ride in a towed vehicle.
5. State and local rules and regulations must be followed
when towing a vehicle.

Caution1. If only the front wheels or only the rear wheels are
lifted for towing, the bumper will be damaged.
In addition, lifting of the rear wheels causes the oil to
flow forward, and may result in heat damage to the
rear bushing of the transfer, and so should never be
done.
2.The vehicle must not be towed by placing only its frontwheels or only the rear wheels on a rolling dolly,
because to do so will result in deterioration of the
viscous coupling and result in the viscous coupling
causing the vehicle to jump forward suddenly.
3. If this vehicle is towed, use flat bed equipment.
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00-18
GENERAL - Towing and Hoisting
Frame contact support location:
1,070 mm (42.0 in.): 1,130 mm (44.0 in.) OOFOO3'
Front OOFO046HOISTING
POST TYPESpecial care should be taken when raising the vehicle on a
\frame contact type hoist. The hoist must be equipped with theL)proper adapters in order to support the vehicle at the proper
locations.
Caution
When service procedures require removing rear suspen-sion, fuel tank, spare tire and liftgate, place additional
weight on rear end of vehicle or anchor vehicle to hoist toprevent tipping of center of gravity changes.
FLOOR JACKThe usual type of floor jack is used at the following locations.
Front: Under the mid point of No. 1 crossmember
NOTEOn vehicles with active-aero system, the front jacking point
can be accessed by removing the center cover panel from
the under cover. Be sure to reinstall the center cover panel
after jack-up operation.
Rear:
Under the jack up bracket of crossmember
Under the rear differential
Caution1. When lifting the No. 1 crossmember, do not allow jack
lifting plate to contact under cover.
2. In order to prevent scarring the crossmember, place a
piece of cloth on the jack’s contact surface (to prevent‘corrosion caused by damage to the coating).
d3. A floor jack must never be used on any part of the
underbody.
4.Do not attempt to raise one entire side of the vehicle by
placing a jack midway between front and rear wheels.This practice may result in permanent damage to the
body.
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GENERAL - Towing and Hoisting
LIFTING, JACKING SUPPORT LOCATION00-19


OOFOO20OOFO019
@ Floor lack locations$Approximate center of gravrty
@Frame contact hoist. twin post‘hoist or scissors lack (emergency) locatlons
EMERGENCY JACKINGJack receptacles are located at the body sills to accept the
scissors jack supplied with the vehicle for emergency road
service. Always block opposite wheels and jack on level
surface.
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00-20GENERAL - Special Handling Instructions for AWD Models
14A019fOOPOO38
BalancingmachineOOA0046
Pick-up stand
OOA0024
I
FRONT WHEEL MEASUREMENTS1. Place the front wheels on the brake tester.
2. Perform the brake test.
CautionThe rear wheels should remain on the ground.
3.If the brake dragging force exceeds the specified value, jack
up the vehicle and manually rotate each wheel to check the
rotation condition of each wheel.
NOTEIf the brake dragging force exceeds the specified value, the
cause may be the effect of the viscous coupling’s dragging
force, so jack up the front wheels and check the rotation
condition of the wheels in this state for no effect by the
viscous coupling’s dragging force.
REAR WHEEL MEASUREMENTSAfter placing the rear wheels on the brake tester, follow the
same procedures as for the front wheel measurements.
WHEEL BALANCE
FRONT WHEEL MEASUREMENTS‘d
1. Jack up the rear wheels, and place an axle stand at the
designated part of the side sill.
2. Jack up the front wheels and set a pick-up stand and
balancing machine in place.
Caution
1.Set so that the front and rear of the vehicle are at
the same height.
2. Release the parking brake.
3. Rotate each wheel manually and check to be sure
that there is no dragging.
3. Use the engine to drive the tires, and then make the
measurements.
Caution
1.If an error is indicated in the state of engine drive,
motor drive can be used concurrently.
2. Do not operate the clutch suddenly, or increase or
reduce speed suddenly during the work.
REAR WHEEL MEASUREMENTS1. Jack up the front wheels, and place an axle stand at the
designated part of the side sill.
2. Jack up the rear wheels, and then, after setting a pick-up
stand and balancing machine in place; follow the same
procedure as for front wheel measurements.
\
\L)
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FOR AWD MODELSMOOUAACBRAKE TEST
‘dIn order to stabilize the viscous coupling’s dragging force, the
brake test should always be conducted after the speedometer
test.